HB0014 BOHAI SEA SUBMARINE WORK FOR MV MAHA ANOSHA IN WEST ANCHORAGE OF QINHUANGDAO PORT FROM 0030UTC TO 1100UTC DAILY FROM 23 TO 27 FEB. ENTERING AND ANCHORING PROHIBITED WITHIN 0.4 MILES RADIUS OF 39-49.47N/119-38.21E. PASS WITH SLOW SPEED. CAUTION ADVISED. HEBEI MSA CHINA.